Giant magneto-piezoresistance and internal friction in a two-dimensional electron system

Hiroshi Yamaguchi, Hajime Okamoto, Yuki Maruta, Sunao Ishihara, Sen Miyashita, Yoshiro Hirayama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We use a micromechanical cantilever with an integrated two-dimensional electron system to show that an extremely small strain of the order of 10 -4 induces a localized-delocalized electronic state transition. This strong strain effect improves the piezoresistive gauge factor by more than two orders of magnitude compared to the conventional Si cantilever. Furthermore, we found that the cantilever mechanical motion is affected considerably by friction exerted by the electron systems.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume46
Issue number25-28
DOIs
Publication statusPublished - 2007 Jul 13

Keywords

  • 2DES
  • Cantilever
  • GaAs
  • MEMS
  • Piezoresistance

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Giant magneto-piezoresistance and internal friction in a two-dimensional electron system'. Together they form a unique fingerprint.

Cite this